Top 100 Green Energy startups in USA
Aug 24, 2026
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1
Funding: $5M
Grounded builds highly reliable, fully electric recreational vehicles for self-sustainability on the road.
Grounded builds highly reliable, fully electric recreational vehicles for self-sustainability on the road.
2
Funding: $13.1M
Reservoir provides smart heat pump water heaters with connected energy management and thermal storage. But predicting when people will need hot water, the system can heat the tank when electricity demand is low and prices are cheap. Plus, the device’s heat pump is nearly four times more efficient than an electric water heater and five times more efficient than a natural gas version. The system can also relieve strain on the grid at the neighborhood level - aggregate the fleet of water heaters to participate in utility demand response programs, which pay handsomely for large users to avoid tapping the grid at certain times.
Reservoir provides smart heat pump water heaters with connected energy management and thermal storage. But predicting when people will need hot water, the system can heat the tank when electricity demand is low and prices are cheap. Plus, the device’s heat pump is nearly four times more efficient than an electric water heater and five times more efficient than a natural gas version. The system can also relieve strain on the grid at the neighborhood level - aggregate the fleet of water heaters to participate in utility demand response programs, which pay handsomely for large users to avoid tapping the grid at certain times.
3
Funding: $83.1M
Anthro Energy is a materials company that offers build batteries to enable radically new electronics. Anthro Energy's flexible, safe, and high-performance batteries are widely used for defense applications The startup is building Kentucky factory that is aimed to become a key node in the emerging U.S. battery supply chain. It will be set up to make a range of electrolytes, though Mackanic said he’d eventually like to see much of the output dedicated to Athro’s own polymer product, Proteus, which is designed to drop into an existing production line with minimal tweaks — a major reason why the startup can begin production using other companies’ formulations. Once customers validate Anthro’s own material, the startup can shift production accordingly.
Anthro Energy is a materials company that offers build batteries to enable radically new electronics. Anthro Energy's flexible, safe, and high-performance batteries are widely used for defense applications The startup is building Kentucky factory that is aimed to become a key node in the emerging U.S. battery supply chain. It will be set up to make a range of electrolytes, though Mackanic said he’d eventually like to see much of the output dedicated to Athro’s own polymer product, Proteus, which is designed to drop into an existing production line with minimal tweaks — a major reason why the startup can begin production using other companies’ formulations. Once customers validate Anthro’s own material, the startup can shift production accordingly.
4
Funding: $77.3M
Star Catcher is creating the first space power grid - an orbital power transmission system designed for wireless optical (laser) power transmission to satellites and spacecraft. This grid could reduce the need for larger onboard solar arrays and batteries, extend mission life, and enable more energy-intensive applications in orbit. Star Catcher's laser receivers are small and lightweight, and can be installed without major modifications to the satellite's structure. The company has already completed an in-orbit demonstration of the subsystem and, according to the company, set a world record for optical power transmission.
Star Catcher is creating the first space power grid - an orbital power transmission system designed for wireless optical (laser) power transmission to satellites and spacecraft. This grid could reduce the need for larger onboard solar arrays and batteries, extend mission life, and enable more energy-intensive applications in orbit. Star Catcher's laser receivers are small and lightweight, and can be installed without major modifications to the satellite's structure. The company has already completed an in-orbit demonstration of the subsystem and, according to the company, set a world record for optical power transmission.
5
Funding: $2.3B
Base Power manufactures and installs large home batteries up to 40 kWh, providing 36 hours of backup power. Batteries help save on electricity costs while supporting the grid. The battery charges when energy is cheapest - at night. During peak demand, the Base battery network helps balance city grid by acting as an energy supplier. Base's AI system monitors weather and predicts power outages to protect the entire grid. It also remotely monitor battery's breaks. Homeowners can also control the battery using a mobile app. Base Power says it has grown its battery fleet to more than 500 megawatt hours in Texas and Illinois.
Base Power manufactures and installs large home batteries up to 40 kWh, providing 36 hours of backup power. Batteries help save on electricity costs while supporting the grid. The battery charges when energy is cheapest - at night. During peak demand, the Base battery network helps balance city grid by acting as an energy supplier. Base's AI system monitors weather and predicts power outages to protect the entire grid. It also remotely monitor battery's breaks. Homeowners can also control the battery using a mobile app. Base Power says it has grown its battery fleet to more than 500 megawatt hours in Texas and Illinois.
6
Funding: $114M
Deep Fission wants to build reactors a mile underground. Thus by using the natural conditions deep under the earth’s surface it can eliminate the need for the large pressure vessels and containment structures needed in traditional pressurized water reactor designs. The startup claims this will significantly reduce costs while enhancing safety, sustainability, and operational efficiency. Its reactor is designed to use conventional low-enriched uranium fuel and an existing supply chain, sidestepping a significant source of delay and concern for other advanced reactor designs. The company is targeting use cases including AI data centers.
Deep Fission wants to build reactors a mile underground. Thus by using the natural conditions deep under the earth’s surface it can eliminate the need for the large pressure vessels and containment structures needed in traditional pressurized water reactor designs. The startup claims this will significantly reduce costs while enhancing safety, sustainability, and operational efficiency. Its reactor is designed to use conventional low-enriched uranium fuel and an existing supply chain, sidestepping a significant source of delay and concern for other advanced reactor designs. The company is targeting use cases including AI data centers.
7
Funding: $65M
Tempo creates thermal energy storage systems that make electrified industrial heat reliable and cost-competitive. Tempo's thermochemical batteries provide continuous heating up to 1200°C without complex upgrades and recharge in just a few hours. They utilize a magnesium-based material that can store and release heat over 1,000 times without degradation. Tempo holds key intellectual property in the field of thermochemical energy storage and partners with global clients in the cement, chemical, metallurgy, food, and other industries to achieve large-scale electrification of industrial heat.
Tempo creates thermal energy storage systems that make electrified industrial heat reliable and cost-competitive. Tempo's thermochemical batteries provide continuous heating up to 1200°C without complex upgrades and recharge in just a few hours. They utilize a magnesium-based material that can store and release heat over 1,000 times without degradation. Tempo holds key intellectual property in the field of thermochemical energy storage and partners with global clients in the cement, chemical, metallurgy, food, and other industries to achieve large-scale electrification of industrial heat.
8
Funding: $32.9M
Gritt develops AI-powered solar panel-installing robots that can speed up solar plant construction. Rather than building its own robots from scratch, the startup uses rented skidders and robotic arms built by companies like Kawasaki, but they are controlled by Gritt's AI models. The first job the robots handle is unloading large, glass solar panels, carrying them toward the metal frames where they need to be installed, and positioning them on the frames with sub-millimeter accuracy so workers can fasten them. Thus a typical eight-person crew can install 5 times more panels each day. The company has contracts to install gigawatts of solar panels and its customers include three of the top 10 U.S. power construction companies.
Gritt develops AI-powered solar panel-installing robots that can speed up solar plant construction. Rather than building its own robots from scratch, the startup uses rented skidders and robotic arms built by companies like Kawasaki, but they are controlled by Gritt's AI models. The first job the robots handle is unloading large, glass solar panels, carrying them toward the metal frames where they need to be installed, and positioning them on the frames with sub-millimeter accuracy so workers can fasten them. Thus a typical eight-person crew can install 5 times more panels each day. The company has contracts to install gigawatts of solar panels and its customers include three of the top 10 U.S. power construction companies.
9
Funding: $26M
Critical Loop utilizes modular systems and intelligent software to provide on-demand power solutions for AI data centers and other objects. Critical Loop’s system switches to on-site batteries and solar during the peak hours, then back to the grid when demand drops. The station controller predicts and manages on-site battery needs. The company deploys systems in days or weeks, far quicker than utilities’ years-long infrastructure upgrades, and is already serving L.A.’s ports, logistics and factories.
Critical Loop utilizes modular systems and intelligent software to provide on-demand power solutions for AI data centers and other objects. Critical Loop’s system switches to on-site batteries and solar during the peak hours, then back to the grid when demand drops. The station controller predicts and manages on-site battery needs. The company deploys systems in days or weeks, far quicker than utilities’ years-long infrastructure upgrades, and is already serving L.A.’s ports, logistics and factories.
10
Funding: $2.3B
Form Energy develops and manufactures multi-day energy storage systems based on iron-air batteries. These batteries are capable cost-effectively store energy for 100 consecutive hours (unlike lithium-ion batteries, which can only provide energy for a few hours). The batteries are made from safe, inexpensive and abundant materials: iron, water and air. Form Energy operates its own large-scale battery manufacturing facility in West Virginia. The company also develops software for modeling renewable energy systems that take into account modern energy market.
Form Energy develops and manufactures multi-day energy storage systems based on iron-air batteries. These batteries are capable cost-effectively store energy for 100 consecutive hours (unlike lithium-ion batteries, which can only provide energy for a few hours). The batteries are made from safe, inexpensive and abundant materials: iron, water and air. Form Energy operates its own large-scale battery manufacturing facility in West Virginia. The company also develops software for modeling renewable energy systems that take into account modern energy market.
11
Funding: $1.4B
Oklo is building a container-sized, continuously operating, carbon-free and emissions-free fast reactor Aurora. It uses liquid metal coolant and generates up to 75 MW, features built-in safety and can run on reprocessed nuclear waste. The reactor is self-stabilizing, self-regulating and cooled by natural forces. This means the plant is safe for personnel and the technology that enables this has been demonstrated at scale. Oklo also reprocesses nuclear fuel. The company has three project sites and the broadest regulatory support of any modern nuclear power system in the United States. OpenAI co-founder Sam Altman is the primary investor and even served as an early Oklo CEO.
Oklo is building a container-sized, continuously operating, carbon-free and emissions-free fast reactor Aurora. It uses liquid metal coolant and generates up to 75 MW, features built-in safety and can run on reprocessed nuclear waste. The reactor is self-stabilizing, self-regulating and cooled by natural forces. This means the plant is safe for personnel and the technology that enables this has been demonstrated at scale. Oklo also reprocesses nuclear fuel. The company has three project sites and the broadest regulatory support of any modern nuclear power system in the United States. OpenAI co-founder Sam Altman is the primary investor and even served as an early Oklo CEO.
12
Funding: $770M
Antora Energy is electrifying heavy industry with thermal energy storage for zero-carbon heat and power.
Antora Energy is electrifying heavy industry with thermal energy storage for zero-carbon heat and power.
13
Funding: $145M
Peak Energy is a pioneering firm that is industrializing sodium-ion to expedite the shift to renewable energy.
Peak Energy is a pioneering firm that is industrializing sodium-ion to expedite the shift to renewable energy.
14
Funding: $16M
NuCube Energy is developing a high-temperature modular microreactor designed to generate electricity and industrial heat at temperatures up to 1100 degrees Celsius. Reactor is designed to provide up to 15 MW of power for 7 to 30 years before refueling, delivered via road or rail and rapidly installed on site. The reactor design contains no moving parts and, unlike many competing microreactor concepts, utilizes the generated heat for industrial heating. Currently, the company is conducting materials testing, finalizing the design configuration, and collaborating with regulatory agencies to advance to demonstration and commercial implementation.
NuCube Energy is developing a high-temperature modular microreactor designed to generate electricity and industrial heat at temperatures up to 1100 degrees Celsius. Reactor is designed to provide up to 15 MW of power for 7 to 30 years before refueling, delivered via road or rail and rapidly installed on site. The reactor design contains no moving parts and, unlike many competing microreactor concepts, utilizes the generated heat for industrial heating. Currently, the company is conducting materials testing, finalizing the design configuration, and collaborating with regulatory agencies to advance to demonstration and commercial implementation.
15
Funding: $6.1B
VoltaGrid is an energy management and generation company that operates the largest natural gas trucking business in North America. It provides fuel; portable power generation to address temporary or remote energy needs; and stationary, grid-parallel systems to supply consistent, reliable power to data centers and large-scale facilities. By using its vast trucking network, VoltaGrid supplies cleaner-burning natural gas, helping clients lower their carbon footprint and shift to sustainable energy.
VoltaGrid is an energy management and generation company that operates the largest natural gas trucking business in North America. It provides fuel; portable power generation to address temporary or remote energy needs; and stationary, grid-parallel systems to supply consistent, reliable power to data centers and large-scale facilities. By using its vast trucking network, VoltaGrid supplies cleaner-burning natural gas, helping clients lower their carbon footprint and shift to sustainable energy.
16
Funding: $4.9B
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
17
Funding: $4.9B
Redwood Materials is a leading battery and electronics recycling company. Founded by Tesla co-founder JB Straubel, the company's primary business is electric vehicle battery recycling. But in addition to car batteries, it recycles phones, laptops, tablets, power tools and any other lithium-ion-containing devices - to recover critical minerals such as lithium, nickel, cobalt, and copper. The company also uses old batteries to create own energy storage systems that supply electricity to data centers and the national power grid. The company also offers the creation of corporate and municipal energy storages. Thanks to using the most affordable domestic batteries, combining used and new batteries and simplifying installation and system design, it offers the most cost-effective energy storage systems on the market.
Redwood Materials is a leading battery and electronics recycling company. Founded by Tesla co-founder JB Straubel, the company's primary business is electric vehicle battery recycling. But in addition to car batteries, it recycles phones, laptops, tablets, power tools and any other lithium-ion-containing devices - to recover critical minerals such as lithium, nickel, cobalt, and copper. The company also uses old batteries to create own energy storage systems that supply electricity to data centers and the national power grid. The company also offers the creation of corporate and municipal energy storages. Thanks to using the most affordable domestic batteries, combining used and new batteries and simplifying installation and system design, it offers the most cost-effective energy storage systems on the market.
18
Funding: $4.8B
Bloom Energy creates fuel-cell systems for local power generation that can utilize a wide range of resources to generate electricity. Bloom Energy Server can use natural gas, biogas and hydrogen as fuel without combustion and is scalable to tens of megawatts. Installation and commissioning of the server can be completed in as little as three months. These servers are often used to power enterprise buildings and data centers. The company has developed proprietary solid oxide fuel cell technology that ensures low CO2 emissions. Bloom Energy also has its own hydrogen production facility at the world's largest solid oxide electrolyzer plant at NASA's Ames Research Center in Mountain View. The company syas, that this high-temperature plant produces 20-25% more hydrogen per MW than commercially demonstrated low-temperature electrolyzers.
Bloom Energy creates fuel-cell systems for local power generation that can utilize a wide range of resources to generate electricity. Bloom Energy Server can use natural gas, biogas and hydrogen as fuel without combustion and is scalable to tens of megawatts. Installation and commissioning of the server can be completed in as little as three months. These servers are often used to power enterprise buildings and data centers. The company has developed proprietary solid oxide fuel cell technology that ensures low CO2 emissions. Bloom Energy also has its own hydrogen production facility at the world's largest solid oxide electrolyzer plant at NASA's Ames Research Center in Mountain View. The company syas, that this high-temperature plant produces 20-25% more hydrogen per MW than commercially demonstrated low-temperature electrolyzers.
19
Funding: $4.2B
Crusoe designs, builds, and operates the full infrastructure data centers for artificial intelligence, positioning itself as an AI factory company. The company’s vertically integrated model spans from power sourcing, which includes wind, solar, geothermal, and converting otherwise wasted gas into electricity, to operating large-scale, modular AI data center infrastructure.
Crusoe designs, builds, and operates the full infrastructure data centers for artificial intelligence, positioning itself as an AI factory company. The company’s vertically integrated model spans from power sourcing, which includes wind, solar, geothermal, and converting otherwise wasted gas into electricity, to operating large-scale, modular AI data center infrastructure.
20
Funding: $3.5B
Archer is an aerospace company that developed an electric vertical takeoff and landing aircraft tailored for urban air mobility systems.
Archer is an aerospace company that developed an electric vertical takeoff and landing aircraft tailored for urban air mobility systems.
21
Funding: $3.2B
Sunnova provides low-cost solar power to homes. It owns the equipment, installs it, and also eventually sells the electricity it creates to customers.
Sunnova provides low-cost solar power to homes. It owns the equipment, installs it, and also eventually sells the electricity it creates to customers.
22
Funding: $2.9B
Commonwealth Fusion Systems is collaborating with MIT to create SPARC - the world's first fusion device that produces plasma that generates more energy than consumes. This compact, high-field tokamak will be built using high-temperature superconducting (HTS) magnets. CFS technology uses the new superconductor Rare Earth Barium Copper Oxide (REBCO) to produce the most powerful and most compact fusion magnets. Once SPARC is built, the company plans to build the world's first fusion power plant capable of generating hundreds of megawatts of power. CFS research is funded by the U.S. Department of Energy.
Commonwealth Fusion Systems is collaborating with MIT to create SPARC - the world's first fusion device that produces plasma that generates more energy than consumes. This compact, high-field tokamak will be built using high-temperature superconducting (HTS) magnets. CFS technology uses the new superconductor Rare Earth Barium Copper Oxide (REBCO) to produce the most powerful and most compact fusion magnets. Once SPARC is built, the company plans to build the world's first fusion power plant capable of generating hundreds of megawatts of power. CFS research is funded by the U.S. Department of Energy.
23
Funding: $2.9B
Eos produces zinc-based battery energy storage systems. The company's technology overcomes the limitations of traditional lithium-ion batteries paovides discharge time from 3 to 12 hours. The Eos Z3 zinc-based wet battery module includes zinc cathode, aqueous electrolyte, bipolar electrodes and polymer housing. The electrodes offer high mechanical strength, corrosion resistance and chemical stability, ensuring years of operation with virtually no degradation. Furthermore, the bipolar structure simplifies the battery's internal connections, reducing internal resistance and increasing energy conversion efficiency. The company is also developing a software platform for managing the energy storage system, which implements real-time intelligence, advanced control capabilities and AI-based analytics.
Eos produces zinc-based battery energy storage systems. The company's technology overcomes the limitations of traditional lithium-ion batteries paovides discharge time from 3 to 12 hours. The Eos Z3 zinc-based wet battery module includes zinc cathode, aqueous electrolyte, bipolar electrodes and polymer housing. The electrodes offer high mechanical strength, corrosion resistance and chemical stability, ensuring years of operation with virtually no degradation. Furthermore, the bipolar structure simplifies the battery's internal connections, reducing internal resistance and increasing energy conversion efficiency. The company is also developing a software platform for managing the energy storage system, which implements real-time intelligence, advanced control capabilities and AI-based analytics.
24
Funding: $2.4B
Nexamp is bringing clean energy to homeowners and communities everywhere, and helping them save up to 10% on electricity costs without installing rooftop solar panels.
Nexamp is bringing clean energy to homeowners and communities everywhere, and helping them save up to 10% on electricity costs without installing rooftop solar panels.
26
Funding: $2.1B
Silicon Ranch developer, owner and operator of solar energy facilities in US.
Silicon Ranch developer, owner and operator of solar energy facilities in US.
27
Funding: $2B
Pine Gate Renewables is a U.S. developer of 2-25 MW utility-scale solar farms.
Pine Gate Renewables is a U.S. developer of 2-25 MW utility-scale solar farms.
28
Funding: $1.8B
EVgo is one of the largest and most advanced electric vehicle fast charging networks in the US, offering over 1,100 industrial-strength fast charging stations. EVgo chargers are compatible with all fast-charging-capable electric vehicles. The company serves electric vehicle drivers, business owners, automakers, self-driving car companies and rideshare drivers. EVgo offers a user-friendly app for drivers, allowing to search for nearby charging stations, track charging sessions, view session summary and ensure safe charging with Autocharge+. Businesses can host an EV fast charging station for their customers. EVgo manages the entire process, from permitting and installation to maintenance and advanced customer service. Turnkey fast charging is available with no upfront or maintenance costs. Acquired by LS Power
EVgo is one of the largest and most advanced electric vehicle fast charging networks in the US, offering over 1,100 industrial-strength fast charging stations. EVgo chargers are compatible with all fast-charging-capable electric vehicles. The company serves electric vehicle drivers, business owners, automakers, self-driving car companies and rideshare drivers. EVgo offers a user-friendly app for drivers, allowing to search for nearby charging stations, track charging sessions, view session summary and ensure safe charging with Autocharge+. Businesses can host an EV fast charging station for their customers. EVgo manages the entire process, from permitting and installation to maintenance and advanced customer service. Turnkey fast charging is available with no upfront or maintenance costs. Acquired by LS Power
29
Funding: $1.8B
energyRe is at the forefront of North America's energy transition. Building and delivering reliable clean power directly to where people live is not only our opportunity—it is our responsibility.
energyRe is at the forefront of North America's energy transition. Building and delivering reliable clean power directly to where people live is not only our opportunity—it is our responsibility.
30
Funding: $1.8B
Beta Technologies manufactures electric vertical takeoff, landing eVTOL aircraft, and recharging pad systems.
Beta Technologies manufactures electric vertical takeoff, landing eVTOL aircraft, and recharging pad systems.
31
Funding: $1.7B
Sila Nanotechnologies is a provider and manufacturer of revolutionary car batteries.
Sila Nanotechnologies is a provider and manufacturer of revolutionary car batteries.
32
Funding: $1.7B
X-energy produces the Xe-100 - small modular nuclear reactor. It is a fourth-generation, 80-megawatt high-temperature gas-cooled reactor (HTGR), boasting (according to the company) high stability, efficiency, reliability and safety. The reactor can be scaled into 4-pack power plant thanks to its modular design. Its construction maximizes the use of off-the-shelf components, that can be delivered to the site using existing road and rail routes. The reactor does not rely on any active systems, electrical power or human intervention for safety, i.e. it shuts down and dissipates heat passively (as a result of the low power density). X-energy also produces TRISO-X fuel, which can withstand extreme temperatures. The company also aims to produce power systems for lunar bases.
X-energy produces the Xe-100 - small modular nuclear reactor. It is a fourth-generation, 80-megawatt high-temperature gas-cooled reactor (HTGR), boasting (according to the company) high stability, efficiency, reliability and safety. The reactor can be scaled into 4-pack power plant thanks to its modular design. Its construction maximizes the use of off-the-shelf components, that can be delivered to the site using existing road and rail routes. The reactor does not rely on any active systems, electrical power or human intervention for safety, i.e. it shuts down and dissipates heat passively (as a result of the low power density). X-energy also produces TRISO-X fuel, which can withstand extreme temperatures. The company also aims to produce power systems for lunar bases.
33
Funding: $1.7B
Redaptive is an Energy-as-a-Service provider that funds and installs energy-saving and energy-generating equipment and manages energy use in buildings.
Redaptive is an Energy-as-a-Service provider that funds and installs energy-saving and energy-generating equipment and manages energy use in buildings.
34
Funding: $1.6B
Bright Night provides renewable power solutions in a safe and reliable way.
Bright Night provides renewable power solutions in a safe and reliable way.
35
Funding: $1.5B
Fervo Energy is developing proprietary technology for developing and operating geothermal assets. Like its main competitors, Fervo uses hydraulic fracturing and directional drilling techniques borrowed from the oil and gas industry. However, Fervo can drill faster and deeper than existing geothermal developers to exploit hotter rocks and generate more energy at a lower cost. The startup is completing construction of its first large-scale power plant and has begun developing several other sites in the western US, where hot rocks are closer to the surface. Among its key investors is Google, which views geothermal energy as a potential solution for its data centers.
Fervo Energy is developing proprietary technology for developing and operating geothermal assets. Like its main competitors, Fervo uses hydraulic fracturing and directional drilling techniques borrowed from the oil and gas industry. However, Fervo can drill faster and deeper than existing geothermal developers to exploit hotter rocks and generate more energy at a lower cost. The startup is completing construction of its first large-scale power plant and has begun developing several other sites in the western US, where hot rocks are closer to the surface. Among its key investors is Google, which views geothermal energy as a potential solution for its data centers.
36
Funding: $1.5B
TAE Technologies is on a course to commercial fusion energy. It's fusion machine design is compact and linear so a commercial fusion power plant would be easily expandable for mass manufacturing. TAE is pursuing fusion with hydrogen-boron (a.k.a. p-B11 or p11B) because it is plentiful and radiation-free, making it the most sustainable option for running and maintaining commercial fusion power plants. TAE’s method to generate fusion power is called Advanced beam-driven Field-Reversed Configuration (FRC). All together, TAE’s approach to fusion can deliver a affordable product that has high energy density, high availability of fuel and no risk of pollution, proliferation, breakdown or toxic waste, making it the ultimate clean energy source.
TAE Technologies is on a course to commercial fusion energy. It's fusion machine design is compact and linear so a commercial fusion power plant would be easily expandable for mass manufacturing. TAE is pursuing fusion with hydrogen-boron (a.k.a. p-B11 or p11B) because it is plentiful and radiation-free, making it the most sustainable option for running and maintaining commercial fusion power plants. TAE’s method to generate fusion power is called Advanced beam-driven Field-Reversed Configuration (FRC). All together, TAE’s approach to fusion can deliver a affordable product that has high energy density, high availability of fuel and no risk of pollution, proliferation, breakdown or toxic waste, making it the ultimate clean energy source.
37
Funding: $1.5B
Qcells is a utility-scale solar developer, energy storage developer, and solar EPC provider.
Qcells is a utility-scale solar developer, energy storage developer, and solar EPC provider.
38
Funding: $1.5B
QuantumScape is a renewable energy company that develops solid-state battery technology to increase the range of electric cars.
QuantumScape is a renewable energy company that develops solid-state battery technology to increase the range of electric cars.
39
Funding: $1.5B
Helion Energy uses fusion energy to provide pure, safe electricity. Helion's fusion generator elevates fusion (Deuterium and helium-3) fuel to ultra-high temperatures to achieve plasma conditions and directly obtains electricity with a high-efficiency pulsed approach. Magnets confine the plasma in a Field Reversed Configuration (FRC) and speed up two FRCs to 1 million mph from opposite ends of the generator. When the FRCs collide in the center of the system, they are further compressed by a strong magnetic field until they reach fusion temperatures greater than 100M degrees Celsius (150M already achieved). At this temperature, the deuterium and helium-3 ions are moving fast enough to surpass the forces that would otherwise keep them apart, and they fuse. This emits more energy than is consumed by the fusion process. As new fusion energy is generated, the plasma enlarges.
Helion Energy uses fusion energy to provide pure, safe electricity. Helion's fusion generator elevates fusion (Deuterium and helium-3) fuel to ultra-high temperatures to achieve plasma conditions and directly obtains electricity with a high-efficiency pulsed approach. Magnets confine the plasma in a Field Reversed Configuration (FRC) and speed up two FRCs to 1 million mph from opposite ends of the generator. When the FRCs collide in the center of the system, they are further compressed by a strong magnetic field until they reach fusion temperatures greater than 100M degrees Celsius (150M already achieved). At this temperature, the deuterium and helium-3 ions are moving fast enough to surpass the forces that would otherwise keep them apart, and they fuse. This emits more energy than is consumed by the fusion process. As new fusion energy is generated, the plasma enlarges.
40
Funding: $1.5B
TerraPower is developing compact modular nuclear reactors with a closed fuel cycle. Its goal is to make nuclear energy safer and cheaper, while also minimizing radioactive waste. It was co-founded by Bill Gates and partners with GE Hitachi Nuclear Energy. Its fast-neutron reactor Natrium has capacity up to 345 MW and includes molten salt heat storage system. Its advantage is its flexible power output, allowing it to respond to fluctuating demand when combined with renewable energy sources. To ramp quickly, it doesn’t increase or decrease the power output - the extra heat gets stored in a giant vat of molten salt. It uses liquid sodium as a coolant and highly enriched uranium (HALEU) as fuel (for now the company is experiencing supply issues). The demonstration reactor project is expected to be operational by 2030.
TerraPower is developing compact modular nuclear reactors with a closed fuel cycle. Its goal is to make nuclear energy safer and cheaper, while also minimizing radioactive waste. It was co-founded by Bill Gates and partners with GE Hitachi Nuclear Energy. Its fast-neutron reactor Natrium has capacity up to 345 MW and includes molten salt heat storage system. Its advantage is its flexible power output, allowing it to respond to fluctuating demand when combined with renewable energy sources. To ramp quickly, it doesn’t increase or decrease the power output - the extra heat gets stored in a giant vat of molten salt. It uses liquid sodium as a coolant and highly enriched uranium (HALEU) as fuel (for now the company is experiencing supply issues). The demonstration reactor project is expected to be operational by 2030.
42
Funding: $1.2B
Group14 Technologies produces silicon-carbon composite materials for lithium-ion batteries (an alternative to graphite). Its flagship silicon battery material, SCC55, allows batteries to charge in minutes, withstand extreme charge-discharge cycles and last up to 50% longer than traditional lithium-ion batteries. It is used in smartphones, electric vehicle batteries and vertical takeoff and landing aircraft. The company has factories in South Korea, Germany and the United States and manages a global battery supply chain.
Group14 Technologies produces silicon-carbon composite materials for lithium-ion batteries (an alternative to graphite). Its flagship silicon battery material, SCC55, allows batteries to charge in minutes, withstand extreme charge-discharge cycles and last up to 50% longer than traditional lithium-ion batteries. It is used in smartphones, electric vehicle batteries and vertical takeoff and landing aircraft. The company has factories in South Korea, Germany and the United States and manages a global battery supply chain.
43
Funding: $1.2B
TeraWatt Infrastructure operates an electric vehicle charging infrastructure for medium and heavy-duty transport and fleets.
TeraWatt Infrastructure operates an electric vehicle charging infrastructure for medium and heavy-duty transport and fleets.
44
Funding: $1.2B
Nextracker creates smart solartracker solutions that improve the performance of solar PV plants.
Nextracker creates smart solartracker solutions that improve the performance of solar PV plants.
45
Funding: $1.1B
Longroad Energy builds and acquires wind and solar power plants in USA. The company operates over 75 large-scale projects of approximately 25 GW, including remote monitoring, asset management, on-site technical support and full back-office support. Its real estate and development experts acquire leases, options, easements, mineral rights and title insurance necessary for the construction and operation of solar, wind, and energy storage farms.
Longroad Energy builds and acquires wind and solar power plants in USA. The company operates over 75 large-scale projects of approximately 25 GW, including remote monitoring, asset management, on-site technical support and full back-office support. Its real estate and development experts acquire leases, options, easements, mineral rights and title insurance necessary for the construction and operation of solar, wind, and energy storage farms.
46
Funding: $1.1B
Infinium offers an electrofuels solution to decarbonize the transportation sector using today’s infrastructure.
Infinium offers an electrofuels solution to decarbonize the transportation sector using today’s infrastructure.
47
Funding: $1B
SHINE Technologies develops fusion technology to inspect industrial components, produce medical isotopes, and generate fusion energy.
SHINE Technologies develops fusion technology to inspect industrial components, produce medical isotopes, and generate fusion energy.
48
Funding: $913M
The Boring Company aims to dig tunnels efficiently to facilitate an underground transportation network.
The Boring Company aims to dig tunnels efficiently to facilitate an underground transportation network.
49
Funding: $900M
Pacific Fusion is developing a high-gain pulsed magnetic fusion system. Pulsed magnetic fusion involves rapidly compressing a fuel in a container with a powerful magnetic field created by passing high, rapidly increasing electric current through it. This compression heats and inertially holds the fuel, converting hydrogen into helium and releasing massive amounts of energy. The company has eliminated the magnetic system to simplify the system and its maintenance requirements. The system is highly modular, enabling affordable manufacturing and rapid iteration. It uses commonly available materials, simplifying supply chains. The modular pulser can be optimized for a wide range of target designs.
Pacific Fusion is developing a high-gain pulsed magnetic fusion system. Pulsed magnetic fusion involves rapidly compressing a fuel in a container with a powerful magnetic field created by passing high, rapidly increasing electric current through it. This compression heats and inertially holds the fuel, converting hydrogen into helium and releasing massive amounts of energy. The company has eliminated the magnetic system to simplify the system and its maintenance requirements. The system is highly modular, enabling affordable manufacturing and rapid iteration. It uses commonly available materials, simplifying supply chains. The modular pulser can be optimized for a wide range of target designs.
50
Funding: $866.6M
Romeo Power is an energy design and manufacturing powerhouse that created the most energy dense battery packs in the world.
Romeo Power is an energy design and manufacturing powerhouse that created the most energy dense battery packs in the world.
